What sudip says is correct.
It happens when editing the first time, to finish editing, the grid loses focus. When you go back to edit the row keeps the focus.
This is not new, been happening since several earlier versions.

luisvasquezcl wrote:
What sudip says is correct.
It happens when editing the first time, to finish editing, the grid loses focus. When you go back to edit the row keeps the focus.
This is not new, been happening since several earlier versions.

Your grid definition has references, to a function and an array that are unknown to me. Besides that, the eventual presence of other controls in the window or the window type could be related with the problem, so please post a complete small sample showing the problem, then I'll analyze it.